update acklib headers for use in cpp sources. add missing declarations

ack_lib/ACK3D.H

@@ -10,6 +10,10 @@
 
 #include <stddef.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 // USED TO RID OURSELVES OF THE MANY CASTING PROBLEMS
 #define CAST(t,f) (t)(f)
 
@@ -396,6 +400,12 @@ short AckWrapUp(ACKENG *ae);
 //*************************************************************************
 // The user callable functions defined in ACKUTIL.C.
 //*************************************************************************
+// Establish a hook into interrupt 9 for keyboard handling
+void AckSetupKeyboard(void);
+
+// Establish a hook into the user timer interrupt
+void AckSetupTimer(void);
+
 // Internal memory allocation for development purposes
 void *AckMalloc(size_t mSize);
 
@@ -438,5 +448,18 @@ void AckSetTextMode(void);
 // Displays the contents of ScreenBuffer and OverlayBuffer if desired.
 short AckDisplayScreen(void);
 
+//*************************************************************************
+// The user callable functions defined in ACKRTN4.ASM.
+//*************************************************************************
+// Sets the rate at which the timer interrupt will be called
+void AckSpeedUp(int rate);
+
+// Restores original timer interrupt call rate
+void AckSlowDown(void);
+
+#ifdef __cplusplus
+};
+#endif
+
 #endif
 

ack_lib/ACKENG.H

@@ -8,6 +8,10 @@
 #ifndef ACKENG_H_INCLUDED
 #define ACKENG_H_INCLUDED
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define TRANS_WALLS     0
 #define FLOOR_ACTIVE    1
 #define USE_XMS         0       // Set to 0 if XMS not desired
@@ -65,5 +69,9 @@ typedef struct _slicer {
     struct _slicer *Next;   // References the wall slice behind the current slice
     } SLICE;
 
+#ifdef __cplusplus
+};
+#endif
+
 #endif
 

ack_lib/ACKEXT.H

@@ -3,6 +3,10 @@
 #ifndef ACKEXT_H_INCLUDED
 #define ACKEXT_H_INCLUDED
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern  UCHAR       *BackArray[];
 extern  long        xPglobal;
 extern  long        yPglobal;
@@ -124,5 +128,9 @@ extern  volatile long AckTimerCounter;
 extern  volatile short AckTmCount;
 extern  volatile short AckTmDelay;
 
+#ifdef __cplusplus
+};
+#endif
+
 #endif
 

ack_lib/ACKRTN4.ASM

@@ -137,12 +137,13 @@ proc Mymemset_ near
 
 
 ;±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
-; void AckSpeedUp(void)
+; void AckSpeedUp(int rate)
+;  eax: rate
 ;±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
 proc AckSpeedUp_ near
      push    ebx
      push    edx
-     mov        bx,ax
+     mov        ebx,eax
     mov     ax,0FFFFH
     xor     dx,dx
     idiv    bx

ack_lib/IFF.H

@@ -1,6 +1,10 @@
 #ifndef IFF_H_INCLUDED
 #define IFF_H_INCLUDED
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifndef NULL
 #define NULL 0
 #endif
@@ -98,5 +102,9 @@ void ByteFlipShort(short *);
 short iffswab(unsigned short);
 short swab(unsigned short);
 
+#ifdef __cplusplus
+};
+#endif
+
 #endif